Coiling machine



Aug. 16, 1932.

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COILING MACHINE Filed Jan. 10. 1951 'T Sheets-Sheet 4 4177/5125 5 amr/e5 20g mw C. D. DALLAS COILING MACHINE Aug. 16, 1932.

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COILING MACHINE Filed Jan. 10, 1931 7 Sheets-Sheet 7 atentcd ug. l, 193% Llti 1D. DAL, Olii' GEICAGG), ILLHWS, ASSEGNOR. T@ REW @UFPER dit 1 DFCETED, @F (CHICA, JILEINOS, RPORATICN @F ILLINE@ nppiieaticn .tiled Jennery it, 393i. Serial No. 507,905.,

vlhe invention relates to machines tor im parting curvature to strips oi material ted therethrough and so arranged as to cause the strips to take the form of coils as they are discharged trom the machine.

The machine embodying my invention is utilized to coil strips of material such for example as copper and brass, in order that 'such strips may be easily handled and occupy a minimum of space in an annealing furnace. It is a practice to form such strips into coils before annealing as more fully described in mynico-pending application Serial No. 411,106, tiled December 2, 1929, now Patent 1,837,209, and it is desirable that there be an air space between each layer of the coil in order that the material be uniiormly annealed. The strips ot material l 'are curved by being fed between a plurality m of rollers usually three in number. ln inachines as heretofore constructed for this purpose the rollers have been so arranged that the strip is given a uniform radius ot curvature. The coil resulting from a strip given aa a uniform curvature will have its outer layers closely packed or pressed together and it is an object generally of the invention to provide means in a coiling machine of the vkind described whereby coils are produc@ which have equal spacing between the various layers.

` Another object of the invention is the provision in a coiling machine of the kind described, of novel means for varying the radius of curvature as the stri s of material are advanced through the mac ine.

A further object of the invention is the provision of improved means for actuating trip mechanism operable to instantaneously separate the rolles and thereby stop the curving operation at any desired point of the coiling operation.

Still another object of the invention is the provision of improved means for throwing the coil forwardly a substantial distance onto a platform or the like upon discontinuing the ceiling operation, such throwing forward of the coil occurring substantially simultaneously with theinstantaneous sepatil ration of the rollers assaforesaid.

trom the disclosure herein given.

'lo this end my invention consists in the novel construction, arrangement and oombination of parts herein described and shown and more particularly pointed out in the claims.

In the drawings wherein like reference characters indicate like or corresponding parts,

Fig. 1 is a side elevational view of a ceiling machine embodying the devices of my invention m Fig. 2 is an end view of the coiling machine shown in Fig. 1 drawnto a larger scale and a fragmentary end elevational and sectional View of a rolling machine with which the coiling machine coo crates;

Fig. 3 is a sectlonal view along the line 3-3 of Fig. 1 drawn to a larger scale;

Fig. 4 is a sectional view along the line 4-4 of Fig. 1 drawn to a larger scale;

Fig. 5 is a sectional view along the line 5 5 of Fig. 3;

Fig. 6 is a sectional view along the line 6-6 of Fig. 1 drawn to a larger scale;

Fig. 7 is a sectional view along the line 7 7 of F1g. 6;

Fig. 8 is a sectional view along the line 8-8 of Fig. 6; p,

Fig. 9 is a sectional view alon the line 9--9 y of Fig. 1 drawn to a larger sca e;

- Fig. 10 is a sectional view along the line 10-10 of Fig. 1 drawn to a larger scale;

Fig. 11 is a sectional view along the line l 11--11 of Fig. 10;

Fig. 12 is a sectional view along the lineY 12-12 of Fig. 1; and

Fig. 13 is a sectional view showin the details of a guide forming a portion o my dev1ce.

Referring now more particularly to the drawings, a coiling machine 20 embodying 1w the device of my invention is shown in side elevation in Fig. 1 as mounted upon a track comprising a pair of rails 21. A frame or bed 22 provides a support for the operating mechanism including a motor 50. The frame 22 is supported by a plurality of transversely extending axles 23 having flanged wheels 24 engaging the rails 21.

The coiling machine is shown as positioned alongside a rolling machine 78 so that strips of material 8O discharged from the rolling machine are fed into the coiling machine. The strips 80 pass between a pair of rollers 79, forming a part of thel rolling machine, and out between guide plates 81 and 82. The strips 80 upon leaving the rolling machine are fed between rollers 38, 39 and 40, forming a portion of the coiling machine,

and so positioned as to impart curvature to the strips and to cause-them to form coils as hereinafter more particularly described.

The bed 22 is strengthened by avplurality of transverse webs 26 and-longitudinal webs 27. The coiling machine is moved along the 25 rails 21 by manually actuating a driving wheel 25 mounted on one end of a shaft 28 projecting from the bed 22. A worm 31, is mounted on the other end of the shaft 28, in operative engagement with a worm gear 32. )o The gear 32 is fixedly mounted on onel of the axles 23 so that manual rotation of the wheel 25 rotates the axle 23 and the wheels 24 and provides the necessary tractive force to move the machine along the rails 21. The tractive 35 force is increased by connecting-the driven axle 23 with the next adjacent axle 23 by means of sprocket wheels 35 and 34 and a sprocket chain 36. Manual rotation of the wheel 25 thereby positively drive two Iaxles 9 23 and their flanged wheels 24 which engage the rails 21.

A driving'shaft 37, operatively connected with the motor 50, actuates the coiling mechanism including the rollers 38, 39 and 40. The a5 motor 50 is positioned on an elevated end portion 48 of the bed 22 and has a shaft 51 on one end of which a pinion 52 is mounted. The pinion 52 is operatively connected with the driving shaft 37 by a gear 53 mounted on a shaft 54 in meshing engagement with the pinion. A pinion 57, mounted on the shaft 54, drives a gear 58 which is ixedly mounted on a driving shaft 37. The shaft 54 is rotatable in bearings 55 and 56 and the shaft 37 is 55 supported at one end by bearings 59.

A pair of spaced apart transverse vertical housing members and 61, positioned on the other end of the bed from the motor 50, also provide bearing supports for the driving 'l 60 shaft 37. The housing members 60 and 61 are rigidly fastened to the bed 22 by bolts 62 and are connected by a plate 63. The plate 63 is fastened to the members 60 and 61 by angle irons 64 and bolts 65. The housing 35 members 60 and 61 thus supported and connected provide rm bearing supports for the rollers 38, 39 and 40. i

The driving shaft 37 projects through the housing member' 6,1 to provide a mounting for a gear' 41 which meshes with a gear 42 on the roller 39. The gear 41 also meshes with a gear 46 mounted on one end of the roller 40 so that the rollers 39 and 40 are caused to rotate together in clockwise direction as observed in Fig. 2. A strip of material 80, upon leaving the rolling machine, is fed through a guide comprising inwardly converging plates 83 and 84 which directs the strip above the rollers 39 and 40 and underneath the roller 38. A pair of idler gears 43 and 44, mounted on the housing 61, operatively connect a gear 45 with the gear 42 to cause the roller 38 to rotate in counter-clockwise direction as observed in Fig. 2. The roller 38 is so positioned between and spaced away from the rollers 39 and 40 that the advancing strip 80 is curved by its cgntact with the rollers and has its upper surface concave as best shown in Fig. 3. As the strip of material is curved and advances the curved portion coils about itself above the rollers 38,39 and 40 v where it is supported and 77. v

A plate 169 provides a barrier preventing the coiled portion of the strip from rolling rearwardly off the supporting rods 76 and 7 7. A pair of end guide plates 170 are connected to the plate 169 and fastened by a plurality of bolts 171. The position of the plates 170 on the plate 169 can be adjusted to accommodate coiled strips of various widths. The guide plates 17 0 keep the edges of the layers comprising the coil in substantial alignment. The plate 169 is xedly mounted on a shaft 168' and by rotating the shaft the plate becomes a swing or throw plate operable to by a pair of rods 76 throw the coiled portion of the strip 80 forwardly onto a platform 174 shown in dotted lines in Fig. 3.

The rod 76 is positively driven in clockwise direction as observed in Fig. 3 and for this purpose it has one end projecting through the housing member 60 with a gear 75 iixedly mounted on the projecting end. The gear 75 is connected by means of idler gears 73 and 74 with a gear 72. The gear 72 is fixedly mounted on the adjacent projecting end of the roller 39 and the described rotation of the roller causes the rod 76 to rotatev in counterclockwise direction as observed in Fig. 4 or in clockwise direction as observed in Fig. 3. Contact of the coiled portion of the strip 80 with the positively driven rod 76 assists in the coiling operation as described.

Upon completion of the coiling operation the strips 80 are thrown forwardly upon the platform 174 by rotating theshaft 168 on which the swing plate 169 is mounted. The shaft 168 is oscillated to actuate the swing plate 169 by a manually controlled air cylinder 152 suitably fastened to the housing member by bolts or screws, not shown. The cylinder 152 has a piston (not shown) from which projects a rod 153, vertically movable in a slide frame 155. The piston rod 153 iS forced downwardly upon the admission of air to the upper end of the cylinder 152 through a pipe 162 and is moved upwardly by the admission of air to the lower end of the cylinder through a pipe 161. The pipes 161 and 162 are connected by a control valve 160 with a compressed air supply pipe 163.V

The described vertical movement of the piston 'rod 153 causes corresponding oscillations of a trip shaft 154 with which the piston rod 153 is connected by a crank 156. The free or swinging end of the crank 156 has a slot 159 in which is positioned a member` 157 pivotally mounted on the piston rod 153. The pivot member 157 has an angular portion forming a sliding fit with the side walls of the crank 156. A sliding member 158 is mounted on the lower end of the piston rod 153 and has an elongated tapering slot in which the free end of the crank shaft 156 is positioned, the dimensions of the slot being such that the crank 156 freely rotates and slides therein. A trip shaft 154 is mounted in bearings 164 and has a coupling lever 165 fixedly mounted thereon. The lever 165 is connected by means of a link 167 with a lever 166 iixedly mounted on the shaft 168. Downward movement of the piston rod 153 so rotates the shaft 168 as to cause the plate 169 to swing in counter-clockwise direction as observed in Fig. 4, and throw the coiled strip of material off of the rods 76 and 77 as already described. The return movement of the iston rod 153 in the same way moves the p ate 169 back to its normal vertical position.

In some cases it is desirable that a portion of the strip 80 be left straight and uncoiled. This is accomplished by moving one of the coiling rollers out of the path of the'strip. In the device shown the roller 40 is thus movable and for this purpose the ends of the roller 40 are mounted in bearing blocks 192 which are hingedly connected with and can be oscillated about the driving shaft 37 as an axis. The roller 40 is held in its full line position of Fig. 3 by a pair of links 193, each connected Lat one end with one of the bearing blocks 192 and at the other end the links are connected with corresponding arms 194 mounted on a shaft 180. The shaft 180 is mounted in the housing members 60 and 61 in longitudinal alignment with the trip i shaft 154. The links 193 connecting the arms 194 with the blocks 192 thereby provide a support for the roller 40, so arranged that the weight of the roller 40 tends to keep the links 193 and arms 194 in their full line position of Fig. 3.

For convenience in handling the coiled strips of material it is in some .cases desirable to leave the outer end portion of the strip uncurved for a short distance, which uncurved portion is called a tail. rThe tail results from permitting the roller 40 to be moved from its full line to its dotted line position of Fig.- 3 in which position of the roller 40 it is obvious that the strip of material will pass between the rollers 38 and 39 without having any curvature imparted thereto. v

The roller 40 -is caused to move to and from its dotted line position by oscillation of the shaft 180 and for this purpose the shaft is connected by a jaw clutch mechanism with the shaft 154. The clutch mechanism comprises a section 181 ixedly mounted on the shaft 154 and a section 182 slidably mounted on the shaft 180. A base 187 provides a. support for means operable to manually a'ctuate the slidable clutch section 182. rIhe clutch section 182 is moved into'and out of operative engagement with the fixed section 181 by manually actuating a handle 183. A lever 184 having a pivot mounting 188 in the supporting base 187 is rotated by manual actuation of the handle 183. A vertically extending member 185 is fastened at its lower end to the pivot 188 and has its upper end forming a yoke in operative engagement with the slidable clutch section 182 to move said slidable section into and out of operative engagement with the fixed section 181 of the clutch.

If it is desired to form coils of the strips of material 80, each provided with a tail portion, the slidable clutch section 182 is moved int-o engagement with the fixed section 181 by manually actuating the handle 183 and locking the handle in position by a sleeve 190. The sleeve 190 and the pivot 186 ala ico

are provided with threads (not shown) and by rotating the sleeve by means of a handle 189- the handle 183 is locked against inove ment and the Clutch mechanism is held permanently in operative engagement. It follows that oscillation of the shaft 154 by means of the air cylinder 152 also causes rotation of the shaft when the clutch mechanism is in operative engagement as described. As a result any rotation of a shaft 154 to oscillate the plate 169 will also rotate swing plate 169 to throw the coil forwardly ,and the roller 40 is returned to its normal operative position simultaneouslywith the return 'of the swing plate 169 to its. normal of a tension spring 195. .mally tendsto hold the trip mechanism comvertical position. The shaft 180 is-rotated to the position corresponding to the dotted line position of the roller 40 against the pull The spring 195 norprising the shaft 180, the arms 194 and the links 193 in their full line position.

The degree of curvature imparted to the strip of material 80 by feeding the same between the rollers 38, 39 and 40 is determined by the relative position of the rollers and the degree or amount of such curvature is constant for any particular setting of the rollers. A strip of material coiling about itself coincident with its curvature as above described will normally have its inner layers loosely coiled and suiliciently spaced that annealing of such layers will be uniform and easily accomplished. As the diameter of the coil increases with the number of layers, the outer layers will become increasingly close and tightly packed together so that eifective annealing of such outer layers will be dif- 'cult if not impossible.

The device provides means for changing the degree of curvature of the strip 80 as it advances so that the various layers comprising the coil are substantially equally spaced. The upper roller 38 is for this purpose provided with slidably mounted bearings 85 and means operable to slowly and gradually move the roller 38 away from the rollers 39 and 40 to thereby increase the radius of curvature. The amount of such movement of the roller 38 necessaryv to accomplish the desired re sults is relatively small and is so slight that the gear 45 on the end of the roller 38 remains in operative meshing engagement with the adjacent gear '44 for all adjusted positions of the roller.

An upwardly projecting member 92 is mounted oneach of the bearings 85 and is fastened thereto by bolts 94. The members 92 project upwardly through and above the top portion of the vertical housing members and 61 and are each provided with a bushing 86 in which the bearings have a sliding t. Pivot brackets 87 are fastened to the top of each of the vertical housing members 60'and 61 by screwbolts 88. Each of the brackets 87 has an upwardly'extending apertured lug 89 through which a pin 91 projects and forms a pivot support for thebifurcated and of a. lever 90. Pins 93 connect the levers 90 with the upwardly projecting members 92 at a point adjacent the pivot 91 so that a substantial movement of the free end of the lever results in a relatively slight movement of the member 92. Oscillation of the lever 90 about the pivot 91 actuates the member 92 and causes a corresponding movement of the bearings 85 carrying the roller 38.

The levers 90 are operatively connected with an air cylinder 139 positioned at the forward end of the bed 22 adjacent the motor the pipe 149 and return movement of the piston rod 138 is accomplished by admitting air to the cylinder through the pipe 140. A valve 141 controls the admission of air to the pipes 140 and 149 from a supply pipe 150. The air cylinder piston is connected by a rod 143 with a piston (not shown) in an oil cylinder 142.

v The opposite ends of the oil cylinder 142 are connected by pipes 144 and 145 through which oil is admitted to the cylinder by a filler cup 148. A needle valve 146 is positioned in the pipe 144 to permit oil to flow from the left hand end of the cylinder 142 to the right hand end as the -rods 138 and 143 are moved to the left by the action of the air in the cylinder 139. A check valve 147 closes the pipe 145 against any flow of oil from the left hand end to the right hand end of the cylinder 142. The described construction operates to limit the out stroke of the rods 138 and 143 as controlled by the needle valve *146, in accordance 'with the time required for feeding a strip of material through the coiling machine.v The return stroke is made in a small fraction of the time required for the out stroke by reason of the check valve 147 opening` under pressure of the oil from the other end of the cylinder 142. A guide 132 for the rod 138 is fastened to the side of the bed 22 by a plurality of bolts 133. A cross head 134 has a threaded connection with the out end of the rod 138 and is slidable within the guide 132. Aligned rods 131 and 115 connect the cross head 134 with a socket shell 116. The rod 131 is fastened to the cross head 134 by a ball socket member 137. A bushing 135 provides a uniform bearing for the member 137, and is held in position in the cross head 134 by a nut 136. The overall length of the rods 131 and 115 is adjusted by means comprisin g a sleeve 126 having a threaded connection with the adjacent ends of the rods. The sleeve 126-projects through a plate 128 and is rotated by means of a wheel or disk 127. Rotation of the sleeve 126 in one direction results in shortening the elfective length of the rods 131 and 115 and rotation in the opposite direction increases their effective length. yThe plate 128 mounted on the sleeve 126, is connected with a plate 129 mounted on the rod 115 by ,a pair of rods 130.

The socket shell 116 is actuated longitudinally by the air cylinder 139 and is operatively connected with a system of levers arranged in pairs to transform the longitudinal movement of the socket shell into a reduced corresponding vertical movement of thelevers 90. The socket shell 116 has an oval shaped slot 117 in which a ball joint member119 is positioned. A bushing 118 provides a universal joint for the member 119. A crank arm 101 has its upper end mounted on a bearing shaft 105. The shaft 105 is mounted in the housing member 60 and is provided with a bushing 104 which permits oscillation of the arm 101. The lower end of the arm 101 engages the ball joint member 119 so that longitudinal movement of the socket shell 116 causes a corresponding rotation of the arm. An arm 124 similar to the arm 101 is mounted on the vertical housing member 61 by a shaft 105 and a bushing 104. The arms 101 and 124 are connected by a rod 121 having bifurcated end members 122 threaded thereon engaging the pins 123 in the arms 101 and 124.

The out movement of the piston rod 138 causes a corresponding movement of the connecting rod 121 and a resultant swinging of the lower end of the arms 101 and 124 to the left and return movement of the piston rod 138 causes a corresponding movement of the arms 101 and 124 to the right. The arms 101 and 124 are each held in position on the bearing shafts 105 by a washer 106 and a nut 107 and each have a laterally extending shouldered arm 102. The shouldered arms .102 have a universal joint yoke 99 ivotally mounted thereon by'means of a bus ing 103 and a pin 112. The bushing 103 is held 1n position by a washer 108 and a nut 109. A rod 113 connects each of the yokes 99 with a turn buckle 98. The lower rod 113 and an upper connecting rod 96 each have a threaded connection with the turn buckle 98. The upper end of the rod 96 has a ball end positio'ned in an elongated socket .97 in which a bushing 95 provides a universal mounting for the rod. By threading the turn buckle 98 in either direction the effective length of the member comprising the rods 96 and v113 may be adjusted as desired to increase and -decreasefthe maximum and minimum spacing of the roller 38 from the rollers 39 and 40. An adjusting or limit rod 100 is mounted on the lower` end of the turn buckle 98 and has an inwardly turned end positioned between a nut 114 mountedon the rod -113 and the yoke 99 to limit the amount of movement ofthe turn buckle 98. The system of levers j and rods connecting the lever 90 with the piston rod 131 operates to reduce the rotation of the levers 90 so that a full length stroke ofthe piston in the air cylinder 139 Vraises or lowers the bearing blocks of the i roller 38a relatively small amount, `The resulting movement of the roller 38 corresponding to the outward stroke of the'cylinder 139 provides the necessary change in [the spacing of the rollers 38, 39 and 40 to increase i the curvature and permit the coiling operation to take place with the layers of the coils substantially equally spaced. e v

The amount or degree of curvature corresponding to any position of the roller 38 can be read from graduated members 110. mounted on each of the housing members 60 and 61. A line 7]l on the adjacent lever 90 is in alignment with the particular reading on the member 110 corresponding to the curvature and enables the operator to read the curvature being imparted to the coil. If radius of curvature is too large the air cylinder 139 can be temporarily stopped or checked during the coiling-operation. y

Thus it will be seen that I have provided a coiling machine of the class described which is operable to vary the curvature of the plates or strips of material passing therethrough and provide coils having equally spaced layers. The machine also provides novel means for forming a tail on the end of a coiled strip and for discharging the coil from the machine.

Having thus described my invention, it is obvious that various immaterial modifications may be made in the same without departing from the spirit of my invention;

hence, I do not wish to be understood as limvte iting myself to the exact form, construction,

arrangement and combination of parts here- 1n shown and descrlbed or uses mentlned.

What I claim as new and desire to secure by Letters Patent is 1. In a coiling machine, three rollers arranged in nesting spaced apart horizontally inclined pyramidal relation, a drive shaftand connecting mechanism operable to rotate l'the apex roller in one direction and the base rollers in the opposite direction to curve a strip of material 'fed between the apex and the base rollers in a generally horizontal direction, means operable to gradually change the spacing between said apex roller and said base rollers as a sheet of material is advanced through said rollers, and adjustable means operable to increase and decrease the 'maximum 'and minimum spaced apart position of said apex and base rollers.

2. In a coiling machine, three rollers arranged in nesting spabed `apart pyramidal relation, a drive shaft and connecting mechanism operable to rotate the apex roller in one direction and the base rollers in the opposite direction to curve a strip of material fed between said apex and base rollers, means operable to gradually change the spacing between said apexl roller and said base rollers as a sheet of material is advanced through said rollers, and means operable to permit one of said base` rollers to drop out of contact with .said strip of material.

3. In a coiling machine, three rollers arranged in pyramidal relation, a drive shaft and connecting mechanism operable to rotate the apex roller in one directlon and the base rollers in the opposite direction to curve a strip of material fed between said apex and base rollers, means operable to gradually change the spacing between said apex roller and said base rollers as a sheet of material isy advanced through said rollers, and fluid actuated means operable to move one of said base rollers out of Contact with said strip of material.

4. In a coiling machine, three rollers arranged in nesting pyramidal relation, a drive shaft and connecting mechanism operable to rotate the apex roller in one direction and the base rollers in the opposite direction to curve a strip of material fed between said apex and base rollers, means operable to gradually change the spacing between said apex roller and said base rollers, members providing a support upon which the curved portion of said strip forms a coil, iuid actuated means operable to throw the strip forwardly upon completion of the coiling operation, Vand means operable to move one of said rollers out of contact with said strip to terminate the coilino` operation.

5. 1an a coiling machine, three rollers arranged in nesting pyramidal relation, a drive shaft and connecting mechanism operable to rotate the apex roller in one direction and the base rollers in the opposite direction to curve a strip of material fed between said apex and base rollers, means operable to gradually change the spacing between said apex roller and said base rollers, members providing a support upon which the curved portion of said strip forms a coil, fluid actuated means operable to throw the strip for wardly upon completion of the coiling operation, means operable to move one of said rollers out of contact with said strip to terminate the coiling operation, and clutch mechanism operable to connect said last mentioned means with said Huid actuated means to throw said strip forwardly and to stop said coiling operation simultaneously.

In witness whereof I hereunto subscribe my name this 5th day of January A. D., 1931.

CHARLES` D. DALLAS. 

